Toothbrush



FIG. 1 is a front perspective view from above and one side;

FIG. 2 is a front view;

FIG. 3 is a rear view;

FIG. 4 is a left side view;

FIG. 5 is a right side view;

FIG. 6 is a plan view; and,

FIG. 7 is an underneath plan view.

The broken lines showing the head and parts of the handle illustrate portions of the toothbrush that form no part of the claimed design. 

The ornamental design for a toothbrush, as shown and described. 